I have tried the iTunes 7.7 confidential pre-release-which will be required to install the new…
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Now that the official iPhone OS 2.0 is out, the iPhone Dev Team will release their Pwnage tool for everyone to unlock and jailbreak their iPhones soon, although the specific date/time is not firm yet. It may not be as interesting as before-since most countries now have the iPhone and it will be impossible to buy without doing a contract first-but people looking to install unsigned applications and buy pay-as-you-go cards while traveling-instead of roaming-will find it very useful.